xref: /netbsd/sys/dev/acpi/wb_acpi.c (revision 6550d01e)
1 /* $NetBSD: wb_acpi.c,v 1.5 2010/08/19 18:37:38 jmcneill Exp $ */
2 
3 /*
4  * Copyright (c) 2009 Jared D. McNeill <jmcneill@invisible.ca>
5  * All rights reserved.
6  *
7  * Redistribution and use in source and binary forms, with or without
8  * modification, are permitted provided that the following conditions
9  * are met:
10  * 1. Redistributions of source code must retain the above copyright
11  *    notice, this list of conditions and the following disclaimer.
12  * 2. The name of the author may not be used to endorse or promote products
13  *    derived from this software without specific prior written permission.
14  *
15  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
16  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
17  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
18  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
19  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
20  * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
21  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
22  * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
23  * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
24  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
25  * SUCH DAMAGE.
26  */
27 
28 #include <sys/cdefs.h>
29 __KERNEL_RCSID(0, "$NetBSD: wb_acpi.c,v 1.5 2010/08/19 18:37:38 jmcneill Exp $");
30 
31 #include <sys/param.h>
32 #include <sys/device.h>
33 #include <sys/systm.h>
34 
35 #include <dev/acpi/acpireg.h>
36 #include <dev/acpi/acpivar.h>
37 
38 #include <dev/ic/w83l518dvar.h>
39 #include <dev/ic/w83l518dreg.h>
40 
41 #include <dev/isa/isadmavar.h>
42 
43 #include <dev/sdmmc/sdmmcvar.h>
44 
45 #define _COMPONENT	ACPI_RESOURCE_COMPONENT
46 ACPI_MODULE_NAME	("wb_acpi")
47 
48 static int	wb_acpi_match(device_t, cfdata_t, void *);
49 static void	wb_acpi_attach(device_t, device_t, void *);
50 static int	wb_acpi_detach(device_t, int);
51 static bool	wb_acpi_suspend(device_t, const pmf_qual_t *);
52 static bool	wb_acpi_resume(device_t, const pmf_qual_t *);
53 
54 struct wb_acpi_softc {
55 	struct wb_softc sc_wb;
56 	isa_chipset_tag_t sc_ic;
57 	void *sc_ih;
58 	int sc_ioh_length;
59 
60 	ACPI_HANDLE sc_crs, sc_srs;
61 	ACPI_BUFFER sc_crs_buffer;
62 };
63 
64 CFATTACH_DECL_NEW(wb_acpi, sizeof(struct wb_acpi_softc),
65     wb_acpi_match,
66     wb_acpi_attach,
67     wb_acpi_detach,
68     NULL
69 );
70 
71 static const char * const wb_acpi_ids[] = {
72 #if notyet
73 	"WEC0515",	/* Memory Stick interface */
74 #endif
75 	"WEC0517",	/* SD Memory Card interface */
76 	NULL
77 };
78 
79 static int
80 wb_acpi_match(device_t parent, cfdata_t match, void *opaque)
81 {
82 	struct acpi_attach_args *aa = opaque;
83 
84 	if (aa->aa_node->ad_type != ACPI_TYPE_DEVICE)
85 		return 0;
86 
87 	return acpi_match_hid(aa->aa_node->ad_devinfo, wb_acpi_ids);
88 }
89 
90 static void
91 wb_acpi_attach(device_t parent, device_t self, void *opaque)
92 {
93 	struct wb_acpi_softc *sc = device_private(self);
94 	struct acpi_attach_args *aa = opaque;
95 	struct acpi_resources res;
96 	struct acpi_io *io;
97 	struct acpi_irq *irq;
98 	bus_space_handle_t ioh;
99 	ACPI_STATUS rv;
100 
101 	sc->sc_ic = aa->aa_ic;
102 
103 	rv = acpi_resource_parse(self, aa->aa_node->ad_handle, "_CRS",
104 	    &res, &acpi_resource_parse_ops_default);
105 	if (ACPI_FAILURE(rv))
106 		return;
107 
108 	AcpiGetHandle(aa->aa_node->ad_handle, "_CRS", &sc->sc_crs);
109 	AcpiGetHandle(aa->aa_node->ad_handle, "_SRS", &sc->sc_srs);
110 	if (sc->sc_crs && sc->sc_srs) {
111 		sc->sc_crs_buffer.Pointer = NULL;
112 		sc->sc_crs_buffer.Length = ACPI_ALLOCATE_LOCAL_BUFFER;
113 		rv = AcpiGetCurrentResources(sc->sc_crs, &sc->sc_crs_buffer);
114 		if (ACPI_FAILURE(rv))
115 			sc->sc_crs = sc->sc_srs = NULL;
116 	}
117 
118 	io = acpi_res_io(&res, 0);
119 	irq = acpi_res_irq(&res, 0);
120 	if (io == NULL || irq == NULL) {
121 		aprint_error_dev(self, "incomplete resources\n");
122 		goto cleanup;
123 	}
124 
125 	if (bus_space_map(aa->aa_iot, io->ar_base, io->ar_length, 0, &ioh)) {
126 		aprint_error_dev(self, "couldn't map registers\n");
127 		goto cleanup;
128 	}
129 	sc->sc_ioh_length = io->ar_length;
130 
131 	sc->sc_ih = isa_intr_establish(sc->sc_ic, irq->ar_irq,
132 	    (irq->ar_type == ACPI_EDGE_SENSITIVE) ? IST_EDGE : IST_LEVEL,
133 	    IPL_SDMMC, wb_intr, &sc->sc_wb);
134 	if (sc->sc_ih == NULL) {
135 		aprint_error_dev(self,
136 		    "couldn't establish interrupt handler\n");
137 		goto cleanup;
138 	}
139 
140 	sc->sc_wb.wb_dev = self;
141 	sc->sc_wb.wb_type = WB_DEVNO_SD;
142 	sc->sc_wb.wb_iot = aa->aa_iot;
143 	sc->sc_wb.wb_ioh = ioh;
144 	sc->sc_wb.wb_irq = irq->ar_irq;
145 	sc->sc_wb.wb_base = io->ar_base;
146 	wb_attach(&sc->sc_wb);
147 
148 	pmf_device_register(self, wb_acpi_suspend, wb_acpi_resume);
149 
150 cleanup:
151 	acpi_resource_cleanup(&res);
152 }
153 
154 static int
155 wb_acpi_detach(device_t self, int flags)
156 {
157 	struct wb_acpi_softc *sc = device_private(self);
158 	int rv;
159 
160 	pmf_device_deregister(self);
161 
162 	if (sc->sc_crs_buffer.Pointer)
163 		ACPI_FREE(sc->sc_crs_buffer.Pointer);
164 
165 	rv = wb_detach(&sc->sc_wb, flags);
166 	if (rv)
167 		return rv;
168 
169 	if (sc->sc_ih)
170 		isa_intr_disestablish(sc->sc_ic, sc->sc_ih);
171 
172 	if (sc->sc_ioh_length > 0)
173 		bus_space_unmap(sc->sc_wb.wb_iot, sc->sc_wb.wb_ioh,
174 		    sc->sc_ioh_length);
175 
176 	return 0;
177 }
178 
179 static bool
180 wb_acpi_suspend(device_t self, const pmf_qual_t *qual)
181 {
182 	struct wb_acpi_softc *sc = device_private(self);
183 
184 	return wb_suspend(&sc->sc_wb);
185 }
186 
187 static bool
188 wb_acpi_resume(device_t self, const pmf_qual_t *qual)
189 {
190 	struct wb_acpi_softc *sc = device_private(self);
191 	ACPI_STATUS rv;
192 
193 	if (sc->sc_crs && sc->sc_srs) {
194 		rv = AcpiSetCurrentResources(sc->sc_srs, &sc->sc_crs_buffer);
195 		if (ACPI_FAILURE(rv))
196 			printf("%s: _SRS failed: %s\n",
197 			    device_xname(self), AcpiFormatException(rv));
198 	}
199 
200 	return wb_resume(&sc->sc_wb);
201 }
202